Safety Thistle Funnel with Bend and Safety Bulb, 30cm, Borosilicate Glass Entomology & Zoology_Dissection the longer focal value softening

the longer focal value softening divergence and producing a wider apparent field through reduced virtual reflections

Student pulley demonstration set with a range of pulleys for mechanical-advantage and force-multiplication comparisons

and resonance through a 6V motor driving cams and spring actuators across four springs and two hanging masses on a 19-inch frame

Six replacement gold leaves cut to fit the standard gold-leaf electroscope

Low voltage input is via a pair of mounted 4 mm Sockets

Safety Thistle Funnel with Bend and Safety Bulb, 30cm, Borosilicate Glass Entomology & Zoology_Dissection the longer focal value softeningSafety thistle funnel in borosilicate glass measures 30cm with bend and safety bulb for pressure release during controlled liquid addition.